<%@ page language="java" import="java.util.*" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%> 
<% 
	out.println("page start......");	
	String[] userList={"liaoyong"};
	String user = new String(request.getParameter("user").getBytes("ISO-8859-1"), "UTF-8");
	Arrays.sort(userList);
	int result = Arrays.binarySearch(userList, user);
	if (result > 1) {
		out.println("username is used...");	
	}
%>   
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

</body>
</html>